Results 11 to 20 of about 17,736 (260)

GRB 221009A: The BOAT

open access: yesThe Astrophysical Journal Letters, 2023
GRB 221009A has been referred to as the brightest of all time (BOAT). We investigate the veracity of this statement by comparing it with a half century of prompt gamma-ray burst observations.
Eric Burns   +29 more
doaj   +1 more source

GECAM Localization of High-energy Transients and the Systematic Error

open access: yesThe Astrophysical Journal Supplement Series, 2023
The Gravitational Wave High-energy Electromagnetic Counterpart All-sky Monitor (GECAM) is a pair of microsatellites (i.e., GECAM-A and GECAM-B) dedicated to monitoring gamma-ray transients including the high-energy electromagnetic counterparts of ...
Yi Zhao   +65 more
doaj   +1 more source

Gamma-ray Vortex Burst in Nonlinear Thomson Scattering with Refocusing Spiral Plasma Mirror

open access: yesUltrafast Science, 2023
The gamma-ray vortex burst in the nonlinear Thomson scattering when the laser wakefield accelerated electron bunch collides with an ultra-intense Laguerre–Gaussian laser that was reflected from the refocusing spiral plasma mirror.
Weijun Zhou   +3 more
doaj   +1 more source

GAMMA RAY BURST FOLLOW-UPS WITH BOOTES

open access: yesOdessa Astronomical Publications, 2014
The Burst Observer and Optical Transient Exploring System (BOOTES), is a global robotic observatory network, which started in 1998 with Spanish leadership devoted to study optical emissions from gamma ray bursts (GRBs) that occur in the Universe.
Sergey Guziy   +16 more
doaj   +1 more source

Size of shell universe in light of Fermi GBM transient associated with GW150914

open access: yesPhysics Letters B, 2016
The possible burst occurred in location and temporal consistence with gravitational wave event GW150914, as reported by Fermi GBM, offers a new way of constraining models with extra dimensions.
Merab Gogberashvili   +2 more
doaj   +1 more source

Fair Weather Neutron Bursts From Photonuclear Reactions by Extensive Air Shower Core Interactions in the Ground and Implications for Terrestrial Gamma‐ray Flash Signatures

open access: yesGeophysical Research Letters, 2021
We report on anomalously long duration (2 ms) count rate bursts following the impact of cosmic ray showers near a 7.62 cm x⊘7.62 cm LaBr3 scintillation detector at the High Altitude Water Cherenkov array in Mexico, previously described by Stenkin et al. (
Gregory S. Bowers   +26 more
doaj   +1 more source

Gamma-Ray Burst Prompt Correlations

open access: yesAdvances in Astronomy, 2018
The mechanism responsible for the prompt emission of gamma-ray bursts (GRBs) is still a debated issue. The prompt phase-related GRB correlations can allow discriminating among the most plausible theoretical models explaining this emission.
M. G. Dainotti   +2 more
doaj   +1 more source

Light speed variation from gamma ray burst GRB 160509A

open access: yesPhysics Letters B, 2016
It is postulated in Einstein's relativity that the speed of light in vacuum is a constant for all observers. However, the effect of quantum gravity could bring an energy dependence of light speed.
Haowei Xu, Bo-Qiang Ma
doaj   +1 more source

Polarized Emission from Gamma-Ray Burst Jets

open access: yesGalaxies, 2017
I review how polarization signals have been discussed in the research field of Gamma-Ray Bursts (GRBs). I mainly discuss two subjects in which polarimetry enables us to study the nature of relativistic jets.
Shiho Kobayashi
doaj   +1 more source

Numerical modelling with analytical estimation of the free parameter space of GRB afterglows: The case of GRB 221009A [PDF]

open access: yesEPJ Web of Conferences
On date 9th of October 2022, an exceptionally bright Gamma-Ray Burst, GRB 221009A, was detected by several observatories, both ground- and space-based.
Gasbarra Claudio   +5 more
doaj   +1 more source

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